Federated Tracing with OpenTelemetry: Finding the Subgraph That's Lying to You
· 11 min read
Your P99 just spiked from 180ms to 2.4 seconds. Your supergraph has eight subgraphs. Each subgraph team insists they're healthy. The dashboards on each individual service are green. The router is sweating. Somebody is lying. Without proper tracing across the federation, you're going to spend the next three hours on a war room Zoom call doing forensics with timestamps.
